Perfusion instrument



FIG. 1 is a perspective view of a perfusion instrument showing my newdesign;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a right side view thereof, with the left side view not beingpart of my new design;

FIG. 7 is a cross section along line 7-7 in FIG. 2 ;

FIG. 8 is a cross section along line 8-8 in FIG. 3 ;

FIG. 9 is a perspective view of another perfusion instrument showing mynew design;

FIG. 10 is a front view thereof;

FIG. 11 is a top view thereof;

FIG. 12 is a bottom view thereof;

FIG. 13 is a rear view thereof;

FIG. 14 is a right side view thereof, with the left side view not beingpart of my new design;

FIG. 15 is a cross section along line 15-15 in FIG. 10 ; and,

FIG. 16 is a cross section along line 16-16 in FIG. 11 .

CLAIM The ornamental design for a perfusion instrument, as shown and described. 